Looking at the velocity graph on the right, determine when the object changes direction. Justify your answer.
Answers
Looking at the velocity graph on the right, the object changes direction at 1 sec.
If a line representing the position or displacement of an object on a graph crosses over the x-axis, from the positive region to the negative region (or vice versa), it indicates a change in direction of the object.
On a position or displacement graph, the x-axis typically represents time, and the y-axis represents the position or displacement of the object.
Thus, when the line representing the object's position or displacement crosses the x-axis, it means that the object has reached a point where its position or displacement changes from positive to negative (or vice versa).
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Related Questions
How can acids from living things cause weathering?
Answers
Answer:
Living or once-living organisms can also be agents of chemical weathering. The decaying remains of plants and some fungi form carbonic acid, which can weaken and dissolve rock. Some bacteria can weather rock in order to access nutrients such as magnesium or potassium.
The radius of the sun is 695,700 km and the mass of the sun is 2x1030 kg. What would the force of gravity be on a 60 kg person "standing" on the surface of the sun? What is the acceleration of gravity at the surface of the sun?
Answers
a) The gravitational force is 1.7 * 10^4 N.
b) The acceleration due to gravity is 277 m/s^2.
What is the gravitational force?We know that the gravitational force is the force of attraction that acts in the universe between any two masses that are close to each other. We can see that we have the following information;
Mass of the sun = 2 x 10^30 kg
Mass of the person = 60 kg
Radius of the sun = 695,700 km or 695,700000 m
Force of gravity = Gm1m2/r^2
G = gravitational constant
m1 = mass of the sun
m2 = mass of the person
r = radius of the sun
Hence;
F = 6.67 x 10^-11 * 2 x 10^30 * 60/( 695,700000)^2
F = 8 * 10^21 /4.8 * 10^17
F = 1.7 * 10^4 N
The acceleration due to gravity is gotten from;
g = Gm/r^2
g = 6.67 x 10^-11 * 2 x 10^30/( 695,700000)^2
g = 1.33 * 10^20/4.8 * 10^17
g = 277 m/s^2
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Mete reading a cruise the sale and the bulb in the simple circuit above is the same explain what is the same and what is different in terms of energy
Answers
Answer:
:parallel
Explanation:
Potential difference is the difference in potential energy per charge between two different points in an electric circuit. Here is a simpler explanation:
When the car comes to a sudden stop, the passenger ________ in motion
Answers
Answer:
If the car comes to a sudden stop, your body tends to keep moving forward.
Explanation:
Which of the following would be the best way to calculate the volume of a log with a serious defect? Question 14 options: Defects do not change the volume of a cut log. Assume at least half the volume of the log will be lost. Calculate the volume of the defect and subtract it from the total volume of the log. Calculate volume of the log and ignore the defect.
Answers
The best way to calculate the volume of a log with a serious defect is to calculate the volume of the defect and subtract it from the total volume of the log which is denoted as option C.
What is Volume?This is referred to as the amount of space occupied by any three-dimensional solid which could be a square, rectangle etc.
In a scenario where a defect is present in the log, then it is best to consider it by first calculating the volume of the defect after which it is then subtracted from the total volume of the log in other to give an accurate result.
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The space shuttle, which was first launched on April 12, 1981, is the world's
first reusable space vehicle. The shuttle is placed in orbit by three engines that
do 1.4 x 1013 J of work in 8.5 min. What is the power output of these engines?
Answers
Answer:2.7 X 10₁₀W = 27 GW
Explanation:
W=1.4 X 10₁₃ J
ΔT=8.5 mins
P=W/ΔT=
1.4 x 10₁₃J/(8.5 mins)(60s/min)=2.7 x10₁₀W=27GW
the strength of the magnetic field at the center of two concentric current loops is zero. the smaller loop has a radius of 0.0390 m and a current of 12.0 a. the larger current loop carries a current of 27.0 a. what is the radius of the larger loop?
Answers
The strength of the magnetic field at the center of two concentric current loops is zero. The smaller loop has a radius of 0.0390 m and a current of 12.0 A. The larger current loop carries a current of 27.0 A, thus the radius of the larger loop should be 0.08775 m
What is the radius of the larger loop? Formula to calculate magnetic field on the axis of a circular current loop that is at a distance x from the center of the loop is given by the equation below.
B = \(\frac{\mu_oI}{2R}\)
Here, B is the magnetic field on the axis of a circular current loop that is at a distance x from the center of the loop.
μ₀ is the permeability of free space.
I is the current in the loop,
R is the radius of the loop
In the case of a smaller loop, the magnetic field at its center is \( B_1 \) and the magnetic field generated by the larger loop at the center of the smaller loop is \( B_2 \).
Then \(B_1- B_2=0\)
\(\frac{\mu_o}{2}[\frac{I_1}{R_1}-\frac{I_2}{R_2}]=0\)
where \( I_1 \) \( I_2 \) are the currents in smaller and larger loops respectively.
\( R_1 \) \( R_2 \) are the radius of smaller and larger loops respectively.
\(\frac{I_1}{R_1} = \frac{I_2}{R_2}\\R_2= \frac{I_2\times R_1}{I_1}\\R_2=0.08775 m.\)
Therefore, the radius of the larger loop is 0.08775 m.
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An object with mass m is moving along the x-axis according to the equation x(t)=αt^2−2βt , where α and β are positive constants.
What is the magnitude of the net force on the object at time t=0?
Express your answer in terms of m and α.
Answers
The magnitude of the net force on the object at time t=0 is 2mα.
The magnitude of the net force on an object can be found using the equation F=ma, where F is the force, m is the mass, and a is the acceleration. In this case, we need to find the acceleration of the object at time t=0. We can do this by taking the derivative of the equation for x(t) with respect to time: x(t)=αt^2−2βt dx/dt=2αt−2β The derivative of x(t) with respect to time is the velocity of the object, so we can take the derivative again to find the acceleration: dv/dt=2α The acceleration of the object is 2α, so we can plug this into the equation for force to find the magnitude of the net force: F=ma F=m(2α) F=2mα Therefore, the magnitude of the net force on the object at time t=0 is 2mα.
Magnitude is a measure of the magnitude of an earthquake based on the seismic moment. This scale was introduced in 1979 by Tom Hanks and Hiroo Kanamori as a substitute for the Richter scale and is used in the field of seismology to compare the energy released by an earthquake.
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What is the period of a wave that travels through a spring at 2.5 m/s and has a wavelength of 3m ?
Answers
Answer:
Explanation:
f
=
v
λ
where v is the velocity of the wave
λ
is the wavelength.
what characteristics are shared by both heating and cooling curves? choose 4
Answers
The characteristics shared by both heating and cooling curves is that phases changes when the temperature stays the same.
What is heating and cooling?Heating is the process by which the temperature of a place or substances or object is increased.
Cooling Is the process of lowering the temperature of a substance or object by using conditioners or by freezing .
Therefore, The characteristics shared by both heating and cooling curves is that phases changes when the temperature stays the same.
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A telescope has an objective with a refractive power of 1.25
diopters and an eyepiece with a refractive power of 230
diopters.
(a) What is the angular magnification of the telescope?
Answers
The angular magnification of the telescope is approximately 183.9.
The angular magnification of a telescope can be calculated using the formula:
M = fo/fe
where M is the angular magnification, fo is the focal length of the objective, and fe is the focal length of the eyepiece.
We can calculate the focal lengths of the objective and eyepiece using their refractive powers, which are given in diopters:
f = 1/P
where f is the focal length in meters and P is the refractive power in diopters.
Therefore, the focal length of the objective is:
fo = 1/1.25 = 0.8 meters
And the focal length of the eyepiece is:
fe = 1/230 = 0.00435 meters
Now we can calculate the angular magnification:
M = fo/fe = 0.8/0.00435 = 183.91
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A piece of metal has a mass of 60 g and a volume of 3 cm^3, what is the density of the metal..?
Answers
====================================================
Work Shown:
density = mass/volume
d = m/v
d = (60 grams)/(3 cubic cm)
d = (60/3) g per cm^3
d = 20 g per cm^3
d = 20 g/cm^3
This means that each cubic centimeter of material has about 20 grams of mass.
A cubic centimeter is a cube that has all sides each 1 cm.
The density of the piece of metal is equal to 20 g/cm³ when the mass is 60 g and a volume of 3 cm³ of metal.
What is the density?The density of a substance can be measured as the mass per unit volume of that substance. The average density is equal to the total mass of the substance divided by its total volume.
The formula for the density of the substance is represented as follows:
The density of material = Mass/Volume
The density of a material is an intrinsic property as it does not depend on its size and the S.I. unit of the density is Kg/m³. If the size of the substance increases, the mass increases as well but the density of the material remains the same.
Given, the mass of the metal, M = 60 g
The volume of the metal, V = 3cm³
The density of metal = M/V = 60 /3 = 20 g/cm³
Therefore, the density of a piece of metal is 20g/cm³.
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Details The force on a particle is described by 10x³ - 5 at a point x along the x-axis. Find the work done in moving the particle from the origin to x = 2.
Answers
Answer:
To find the work done in moving the particle from the origin to x = 2, we need to integrate the force over the given interval.
The work done (W) is calculated by integrating the force function with respect to displacement (dx) from the initial position (0) to the final position (2):
W = ∫(0 to 2) (10x³ - 5) dx
Integrating the force function, we get:
W = ∫(0 to 2) (10x³ - 5) dx = [2.5x⁴ - 5x] evaluated from 0 to 2
Now, substituting the upper limit (2) and lower limit (0) into the equation:
W = [2.5(2)⁴ - 5(2)] - [2.5(0)⁴ - 5(0)]
= [2.5(16) - 10] - [0 - 0]
= 40 - 10
= 30
Therefore, the work done in moving the particle from the origin to x = 2 is 30 units of work.
Explanation:
A. Tick (1) the best alternatives. 1. What is the acceleration due to gravity on the surface of moon ? (a) 9.8m/s (b)1.6m/s2 (c) 6.67x10-1m/s (d) 9.8m/s?
Answers
Answer:
\( \green{ \sf \: \: 1.6 \: m {s}^{ - 2} \: \: \: is \: the \: correct \: answer}\)
Explanation:
\( \sf \: \huge{g } _{ \small{moon}} = \frac{ {\huge{g}}_{earth}}{6} \\ \\ \sf \implies \: \sf \: \huge{g } _{ \small{moon}} = \frac{ 9.8}{6} = 1.6 \: \: m {s}^{ - 2} \)
Think about a situation at school where you or someone you know
has demonstrated grit. Describe the situation. Pls help me
Answers
Answer:
to have courage and show the strength of your character. ... A person with true grit has passion and perseverance. Goals are set and followed through.
Explanation:
for example: i had the passion and the courage to finish my school work and chores for i can go out with my friends and to get out of the house for a bit and have fun so i had the courage to finish chores from the house and do some schoolwork for i can finish ad hang out with some friends. so i had the strength to finish everything because i didn't want to be doing school work and chores any more so i had the passion to finish up quickly
meaning of anode and cathode
Answers
Answer:
An anode is an electrode through which conventional current (positive charge) flows into the device from the external circuit, while a cathode is an electrode through which conventional current flows out of the device.
Explanation:
Which object(s) is(are) maintaining a constant velocity? Pick FOUR!
Answers
Answer:
It's B C D E are maintaining a constant velocity
The image shows Earth’s orbit around the Sun.
An illustration with a circle representing the sun and a smaller circle representing a planet. The sun is at a focus of a draw ellipse that the planet is on. There are lines drawn radially out from the Sun to the elliptical path of the planet. The planet is at the part of the ellipse that is closest to the sun. The position of the planet is labeled W and the position opposite the planet is labeled X.
Which describes the changes in Earth’s motion?
The speed increases from W to X because a component of the gravitational force acts in the direction opposite to the velocity.
The speed increases from W to X because a component of the gravitational force acts in the direction of the velocity.
The speed increases from X to W because a component of the gravitational force acts in the direction opposite to the velocity.
The speed increases from X to W because a component of the gravitational force acts in the direction of the velocity.
Answers
(last choice)
The speed increases from X to W because a component of the gravitational force acts in the direction of the velocity.
D)The speed increases from X to W because a component of the gravitational force acts in the direction of the velocity.
Does gravitational force increase with distance?The gravitational force is inversely proportional to the square of the separation distance between the 2 interacting gadgets, extra separation distance will result in weaker gravitational forces. so as items are separated from every other, the pressure of gravitational attraction between them also decreases.
The force of gravity relies immediately upon the masses of the 2 gadgets, and inversely on the square of the gap between them. this means that the pressure of gravity will increase with mass, but decreases with growing distance among items.
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Read the list of sentences from the article.
1 In a physical change, the material involved is structurally the same
before and after the change.
2 A piece of metal may be heated in a fire until it glows, but the metal is
the same material before heating and after cooling.
3 Chemical changes require the breaking and forming of chemical bonds
during a chemical reaction.
4 The creation of a new, solid substance from two liquid substances
indicates that a reaction has taken place that has altered the original
substances.
Which two sentences, taken together, provide the BEST evidence to support the idea
that both physical and chemical changes can significantly change the appearance of a
substance?
(A) 1 and 3
(B) 1 and 4
(C) 2 and 3
(D) 2 and 4
Answers
The best evidence that a substance's appearance can be significantly altered by both chemical and physical changes is the combination of examples 1 and 3.
Option A is correct.
What exactly is a change in the body?A substance undergoes a change in its physical characteristics when it undergoes a physical change. Most of the time, a physical change can be reversed. In the course of such a transformation, no chemical substance is produced.
What are two examples of physical and chemical changes?Chemical changes include processes like burning, frying, rusting, and rotting. The processes of melting, freezing, shredding, and boiling are all examples of physical modifications. The majority of physical symptoms can be reversed with enough energy.
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Compare and contrast types of radioactive decay involving alpha particles, beta particles, and gamma radiation.
Answers
In alpha decay, the nucleus loses two protons, in beta decay, the nucleus either loses or gains a proton whereas in gamma decay, no change in proton number occurs only energy is released.
How do the types of radioactive decay compare?Alpha decay is a type of radioactive decay in which the nucleus of an atom emits an alpha particle which leads to transforming into a new atomic nucleus by losing two protons. During beta decay, the proton in the nucleus is transformed into a neutron and and neutron is transformed into proton while on the other hand, gamma decay is a type of decay in which nucleus changes from a higher energy state to a lower energy state due to the release of electromagnetic radiation.
So we can conclude that In alpha decay, the nucleus loses two protons, in beta decay, the nucleus either loses or gains a proton whereas in gamma decay, no change in proton number occurs only energy is released.
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which food has the lowest energy density? fried green tomatoes sun-dried tomatoes jarred tomato pasta sauce with garlic and olive oil sliced fresh tomatoes with basil and balsamic vinegar
Answers
Option D i.e. sliced fresh tomatoes with basil and balsamic vinegar has the lowest energy density among the given choices.
What is Density?The mass of a substance per unit of volume is termed as its density. Density is most frequently represented by the symbol, however Latin letter D may also be used sometimes. Mass divided by volume is the definition of density in mathematics: where is the density, m is the mass, and V is the volume.
The units of mass divided by volume used to measure density include grammes per centimetre cube (g/cm3) and kilogrammes per litre (kg/l).
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16. PHYSICS The height h of a falling object is given by h = vt - gt2, where vis the initial velocity of the object, t is time, and g is the gravitational constant. Solve for v.
Answers
The value of v; initial velocity is determined as, v = h/t + gt.
What is initial velocity of an object?The initial velocity of an object is the velocity of the object before the effect of acceleration, which causes the change of velocity.
h = vt - gt²
to solve for v (the initial velocity) we will make v the subject of the formula.
h + gt² = vt
divide both sides of the equation by t
h/t + gt = v
Thus, the value of v; initial velocity is determined as, v = h/t + gt.
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how much energy must be absorbed by a 150g sample of ice at 0.0
Answers
The amount of energy that must be absorbed by the 150g sample of ice at 0.0°C is 131,873.55 J.
To calculate the amount of energy that must be absorbed by a 150g sample of ice at 0.0°C, we need to consider two processes: heating the ice from -273.15°C to 0.0°C and melting the ice at 0.0°C.
1. Heating the ice:
The specific heat capacity of ice is 2.09 \(\frac{J}{g ^\circ C}\), and the temperature change is 0.0 - (-273.15) = 273.15°C.
\(Q_1\) = (mass) × (specific heat capacity) × (temperature change)
\(Q_1\) = 150g × 2.09 × 273.15°C
\(Q_1\) =81,773.55 J
2. Melting the ice:
The heat of fusion (enthalpy of fusion) for ice is 334 J/g.
\(Q_2\) = (mass) × (heat of fusion)
\(Q_2\) = 150g × 334 J/g
\(Q_2\) = 50,100 J
The total energy required is the sum of Q1 and Q2:
Total energy = \(Q_1\) + \(Q_2\)
Total energy = 81,773.55 J + 50,100 J
Total energy = 131,873.55 J
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______________ is a type of construction where the main load-bearing elements are hung from suspension cables that are then suspended from vertical supports anchored into the ground or a riverbed. a. domino c. ferroconcrete b. cantilever d. suspension please select the best answer from the choices provided a b c d
Answers
The complete statement is "Suspension is a type of construction where the main load-bearing elements are hung from suspension cables that are then suspended from vertical supports anchored into the ground or a riverbed. "
What is suspension?Generally, A suspension speaks to the holding up of material by apply of another force against gravitational force.
In conclusion, Suspension is a type of construction where the main load-bearing elements are hung from suspension cables.
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An object has a mass of 12 kg. on planet a, the object weighs 69 n. the force of gravity on planet a is:_____.
Answers
the force of gravity on planet a is g = 5.72 m/s2
There is an object that weighs 12 kg. The object's weight on Planet A is 69 N. The equation F=mg, where F is the weight, m is the mass, and g is the force of gravity, can be used to calculate the force of gravity on Planet A:
g = F/m
g = 69 N/ 12 kg
g = 5.72 m/s2
What is the gravity force?The force of attraction between any two objects in the universe is known as gravity or gravitational force. The mass of the object and the square of the distance between them determine the force of attraction. The weakest known force in nature, it is by far.
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Before his weight lifting event Andrew would like to get a quick boost of energy. Which source of nutrition should Andrew consume prior to the match to get the boost of energy he desires
Answers
The source of nutrition that Andrew should consume prior to the match to get the boost of energy he desires is carbohydrate.
What is nutrition?Nutrition refers to the organic process by which an organism assimilates food and uses it for growth and maintenance.
There are 6 major classes of nutrients and they are as follows:
CarbohydratesProteinsLipidsVitaminsMineralsAmong these classes of nutrients, carbohydrates provide the fastest source of energy in the body and hence, can be recommended for an athlete like Andrew who is preparing for a weight lifting endeavor.
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What is the force two changed objects exert on one another if they are 9 meters apart and one has a charge of 2.5 x 10^-6 C and the second has a charge 0f 4.5 x 10^-7 C
Answers
Answer:
The force exerted between the two charges is 0.0001248N
Explanation:
we will be using Columb's law to solve this problem.
Columb's law explains that the Force between two charged bodies is directly proportional to the product of their charges and inversely proportional to the square of the distance between them.
Mathematically,
\(F = K\frac{Q_1 \times Q_2}{r^2}\)
WHere K = constant of proportionality = \(8.9875 \times 10^9 N m^2/c^2\)
\(F = 8.9875 \times 10^9 \times\frac{2.5 \times10^{-6} \times 4.5 \times 10^{-7}}{9^2}= 0.0001248N\)
The force exerted between the two charges is 0.0001248N
I need help quick ! helpppppppp
Answers
To degrade or destroy keratinocytes means something is Keratolytic, just like something that degrades proteins can be said to be proteolytic
To degrade or destroy keratinocytes means something is Keratolytic, just like something that degrades proteins can be said to be proteolytic
True
False
Answers
The statement given, Degrading or destroying keratinocytes means that something is keratolytic, just as something that degrades proteins can be said to be proteolytic, is True.
Similarly, proteolytic refers to the ability to degrade or destroy proteins. Both terms are used to describe substances or processes that can break down these specific types of cells or molecules.
These enzymes are naturally produced by the body, but can also be found in some bacterial species. Keratolytic substances, on the other hand, are used to break down or destroy the keratinocytes, which are the outermost layer of skin cells. These compounds are often used in skin care products to exfoliate the skin and remove dead skin cells.
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The forces that are present on this object are diagramed above. The Nalue of the forces are: Fnorm =5800 N
F
app
=4100 N
F
grav
=8800 N
a) What is the force of the system? b) What is the mass of the object? c) What if the acceleration of the object?
Answers
The force of the system is 18,700 N. The value of a is = 18,700 m/s².
To determine the force of the system, mass of the object, and the acceleration, we can use Newton's second law of motion, which states that the net force acting on an object is equal to the mass of the object multiplied by its acceleration. Mathematically, it can be represented as:
F_net = m * a
Given:
F_norm = 5800 N (normal force)
F_app = 4100 N (applied force)
F_grav = 8800 N (gravitational force)
(a) Force of the system (F_sys):
The force of the system is the net force acting on the object, which can be found by summing up the individual forces:
F_sys = F_app + F_norm + F_grav
F_sys = 4100 N + 5800 N + 8800 N
F_sys = 18,700 N
Therefore, the force of the system is 18,700 N.
(b) Mass of the object (m):
Using Newton's second law, we can rearrange the formula to solve for the mass:
m = F_net / a
Since F_net is equal to the force of the system (F_sys) and the acceleration (a) is not given, we cannot determine the mass of the object without additional information.
(c) Acceleration of the object (a):
To calculate the acceleration, we can rearrange Newton's second law formula:
a = F_net / m
Using the force of the system (F_sys) and assuming a mass of 1 kg (for illustrative purposes):
a = F_sys / m
a = 18,700 N / 1 kg
a = 18,700 m/s²
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